/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  package org.apache.syncope.client.console.widgets;
  
  import de.agilecoders.wicket.core.markup.html.bootstrap.image.Icon;
  import java.io.Serializable;
  import java.util.List;
  import org.apache.wicket.markup.ComponentTag;
  import org.apache.wicket.markup.html.WebMarkupContainer;
  import org.apache.wicket.markup.html.basic.Label;
  import org.apache.wicket.markup.html.link.AbstractLink;
  import org.apache.wicket.markup.html.panel.Panel;
  import org.apache.wicket.model.IModel;
  import org.apache.wicket.model.LoadableDetachableModel;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public abstract class AlertWidget<T extends Serializable> extends Panel {
  
      private static final long serialVersionUID = 7667120094526529934L;
  
      protected static final Logger LOG = LoggerFactory.getLogger(AlertWidget.class);
  
      protected static final int MAX_SIZE = 5;
  
      protected final Label linkAlertsNumber;
  
      protected final Label headerAlertsNumber;
  
      protected final WebMarkupContainer latestAlertsList;
  
      protected IModel<List<T>> latestAlerts;
  
      public AlertWidget(final String id) {
          super(id);
          this.latestAlerts = getLatestAlerts();
  
          setOutputMarkupId(true);
  
          final LoadableDetachableModel<Integer> size = new LoadableDetachableModel<>() {
  
              private static final long serialVersionUID = 7474274077691068779L;
  
              @Override
              protected Integer load() {
                  return getLatestAlertsSize();
              }
          };
  
          add(getIcon("icon"));
  
          linkAlertsNumber = new Label("alerts", size) {
  
              private static final long serialVersionUID = 4755868673082976208L;
  
              @Override
              protected void onComponentTag(final ComponentTag tag) {
                  super.onComponentTag(tag);
  
                  boolean warning = false;
                  try {
                      warning = Integer.parseInt(getDefaultModelObject().toString()) > 0;
                  } catch (Exception e) {
                      LOG.error("Invalid value found: {}", getDefaultModelObject(), e);
                  }
  
                  if (warning) {
                      tag.put("class", "badge badge-warning navbar-badge");
                  } else {
                      tag.put("class", "badge badge-success navbar-badge");
                  }
              }
          };
          add(linkAlertsNumber.setOutputMarkupId(true));
  
          headerAlertsNumber = new Label("number", size);
          headerAlertsNumber.setOutputMarkupId(true);
          add(headerAlertsNumber);
  
          add(getEventsLink("alertsLink"));
  
          latestAlertsList = new WebMarkupContainer("latestAlertsList");
          latestAlertsList.setOutputMarkupId(true);
         add(latestAlertsList);
     }
 
     protected int getLatestAlertsSize() {
         return latestAlerts.getObject().size();
     }
 
     protected abstract IModel<List<T>> getLatestAlerts();
 
     protected abstract AbstractLink getEventsLink(String linkid);
 
     protected abstract Icon getIcon(String iconid);
 
     public static class AlertLink<T> extends Panel {
 
         private static final long serialVersionUID = -6011939604125512766L;
 
         public AlertLink(final String id, final T alert) {
             super(id);
             add(new Label("alert", alert.toString()));
         }
     }
 }